January 13 – Elvis Presley steps into American Studios in Memphis, Tennessee, recording "Long Black Limousine" thus beginning the recording of what becomes his landmark comeback sessions for the albums "From Elvis In Memphis" and "Back in Memphis." The sessions yield the popular and critically acclaimed singles "Suspicious Minds", "In the Ghetto" and "Kentucky Rain."

June 18–22 – The National Convention of the Students for a Democratic Society, held in Chicago, collapses, and the Weatherman faction seizes control of the SDS National Office. Thereafter, any activity run from the National Office or bearing the name of SDS is Weatherman-controlled.

July 25 – Vietnam War: U.S. President Richard Nixon declares the Nixon Doctrine, stating that the United States now expects its Asian allies to take care of their own military defense. This starts the "Vietnamization" of the war.

August 4 – Vietnam War: At the apartment of French intermediary Jean Sainteny in Paris, U.S. representative Henry Kissinger and North Vietnamese representative Xuan Thuy begin secret peace negotiations. They eventually fail since both sides cannot agree to any terms.

October 2 – A 1.2 megaton thermonuclear device is tested at Amchitka Island, Alaska. This test is code-named Project Milrow, the 11th test of the Operation Mandrel 1969–1970 underground nuclear test series. This test is known as a "calibration shot" to test if the island is fit for larger underground nuclear detonations.

November 3 – Vietnam War: U.S. President Richard M. Nixon addresses the nation on television and radio, asking the "silent majority" to join him in solidarity with the Vietnam War effort, and to support his policies. Vice President Spiro T. Agnew denounces the President's critics as 'an effete corps of impudent snobs' and 'nattering nabobs of negativism'.

Vietnam War: In Washington, D.C., 250,000–500,000 protesters stage a peaceful demonstration against the war, including a symbolic "March Against Death".

Dave Thomas opens his first restaurant in a former steakhouse on a cold, snowy Saturday in downtown Columbus, Ohio. He names the chain Wendy's after his 8-year-old daughter Melinda Lou (nicknamed Wendy by her siblings).

November 17 – Cold War: Negotiators from the Soviet Union and the United States meet in Helsinki, to begin the SALT I negotiations aimed at limiting the number of strategic weapons on both sides.

U.S. President Richard Nixon and Japanese Premier Eisaku Sato agree in Washington, D.C. to the return of Okinawa to Japanese control in 1972. Under the terms of the agreement, the U.S. retains rights to military bases on the island, but they must be nuclear-free.

December 1 – Vietnam War: The first draft lottery in the United States is held since World War II (on January 4, 1970, The New York Times will run a long article, "Statisticians Charge Draft Lottery Was Not Random").

December 2 – The Boeing 747 jumbo jet makes its debut. It carries 191 people, most of them reporters and photographers, from Seattle to New York City.

December 6 – The Altamont Free Concert is held at the Altamont Speedway in northern California. Hosted by the Rolling Stones, it is an attempt at a "Woodstock West" and is best known for the uproar of violence that occurred. It is viewed by many as the "end of the sixties."

December 12 – The Piazza Fontana bombing in Italy (Strage di Piazza Fontana) takes place. A U.S. Navy officer and C.I.A. agent called David Carrett is later investigated for possible involvement.

December 20 – During an airing of Rudolph The Red Nosed Reindeer, NBC announces that The Banana Splits Adventure Hour (which was preempted that week, whose final episode aired a week earlier on December 13) was not renewed for a third season, pulling 2 episodes in season 2 off at the last minute before airing. This marked the beginning of NBC's struggles, which lasted until Grant Tinker was hired as CEO of NBC in 1981.